The Jockey Club reminds stallion managers to submit their Reports of Mares Bred (RMBs) for the 2019 breeding season by August 1.

“To ensure that the breeding statistics we release in the fall are as accurate as possible, we request that RMBs be submitted by August 1,” said Matt Iuliano, executive vice president and executive director of The Jockey Club.

In addition, stallion managers who submit completed RMBs by August 1 are among the first to receive their Stallion Service Certificates, which facilitates the timely registration of 2020 foals.

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The Jockey Club today released Report of Mares Bred (RMB) statistics for the 2018 breeding season. Based on RMBs received through October 16, 2018, The Jockey Club reports that 1,214 stallions covered 30,274 mares in North America during 2018.

The Jockey Club estimates an additional 3,000 to 4,000 mares will be reported as bred during the 2018 breeding season.

The number of stallions declined 9.5% from the 1,342 reported at this time in 2017, and the number of mares bred decreased 5.0% from the 31,863 reported last year. The number of stallions covering 125 or more mares increased from 60 in 2017 to 62 in 2018.

Further book size analysis shows a 3.0% increase in the number of mares bred to stallions with a book size of 125 or more in 2018 when compared to 2017 as reported at this time last year; a 1.4% decrease in mares bred to stallions with a book size between 100 and 124; a 7.0% increase in mares bred to stallions with a book size between 75 and 99; a 6.7% decrease in mares bred to stallions with a book size between 50 and 74; a 9.6% decrease in mares bred to stallions with a book size between 25 and 49; and a 16.7% decrease in mares bred to stallions with a book size fewer than 25.

The percentage of broodmares covered by large book size (125 or more) stallions increased from 29.4% in 2017 to 31.9% in 2018. From 2015-2017, this percentage had remained constant at approximately 29%, up from 20.5% in 2014.

The proportion of stallions with book sizes of 125 or more mares grew from 3.1% in 2014 to 4.5% from 2015-2017. In 2018, this proportion increased to 5.1%.

2014

2015

2016

2017

2018

% stallions with book size >125

3.1%

4.5%

4.5%

4.5%

5.1%

% mares covered by stallions with book size >125

20.5%

29.1%

28.7%

29.4%

31.9%

Note: Statistics summarized as of October 16 of the breeding seasons indicated in the columns above; as reports of mares bred continue to be received, final statistics are subject to change.

RMB statistics for all reported stallions in 2018 are available through the Fact Book section of The Jockey Club’s website at jockeyclub.com.

The stallion Into Mischief led all stallions with 245 mares bred in 2018. Rounding out the top five by number of RMBs were Cupid, 223; Klimt, 222; Practical Joke, 220; and, Violence, 214.

Kentucky traditionally leads North America in Thoroughbred breeding activity. During 2018, Kentucky’s 228 reported stallions covered 17,322 mares, or 57.2% of all of the mares reported bred in North America. The number of mares bred to Kentucky stallions increased 0.3% percent compared with the 17,275 reported at this time last year.

Of the top 10 states and provinces by number of mares reported bred in 2018, Kentucky, California, Maryland, and Pennsylvania stallions covered more mares in 2018 than in 2017, as reported at this time last year. The following table shows the top 10 states and provinces ranked by number of mares reported bred in 2018:

State/Province

2017 Stallions

2018 Stallions

Pct. Change

2017 Mares Bred

2018 Mares Bred

Pct. Change

Kentucky

229

228

-0.4%

17,275

17,322

0.3%

California

137

137

0.0%

2,356

2,482

5.3%

Florida

92

78

-15.2%

2,073

1,917

-7.5%

Louisiana

93

80

-14.0%

1,235

1,125

-8.9%

New York

58

48

-17.2%

1,326

1,115

-15.9%

Maryland

30

30

0.0%

768

867

12.9%

Ontario

38

37

-2.6%

810

620

-23.5%

Pennsylvania

36

32

-11.1%

563

610

8.3%

Indiana

59

57

-3.4%

554

506

-8.7%

Oklahoma

54

43

-20.4%

537

470

-12.5%

Note: Each incident in which a mare was bred to more than one stallion and appeared on multiple RMBs is counted separately. As such, mares bred totals listed in the table above may differ slightly from counts of distinct mares bred.

In addition, Report of Mares Bred information on stallions that bred mares in North America is available through report 36P or a subscription service at equineline.com/ReportOfMaresBred.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It is the sole funding source for America’s Best Racing, the broad-based fan development initiative for Thoroughbred racing. You can follow America’s Best Racing at americasbestracing.net. Additional information is available at jockeyclub.com.

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The Jockey Club reminds stallion managers to submit their Reports of Mares Bred (RMBs) for the 2018 breeding season by August 1.

“To ensure that the breeding statistics we release in the fall are as accurate as possible, we request that RMBs be submitted by August 1,” said Matt Iuliano, executive vice president and executive director of The Jockey Club.

In addition, stallion managers who submit completed RMBs by August 1 are among the first to receive their Stallion Service Certificates, which facilitates the timely registration of 2019 foals.

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The Jockey Club has released Report of Mares Bred (RMB) statistics for the 2017 breeding season. Based on RMBs received through October 17, 2017, The Jockey Club reports that 1,342 stallions covered 31,863 mares in North America during 2017.

Based upon historical reporting trends, The Jockey Club estimates an additional 2,000 to 3,000 mares will be reported as bred during the 2017 breeding season.

The number of stallions declined 5.7% from the 1,423 reported at this time in 2016, and the number of mares bred decreased 5.6% from the 33,746 reported last year. The number of stallions covering 125 or more mares decreased from 64 in 2016 to 60 in 2017.

Further book size analysis shows a 3.3% decrease in the number of mares bred to stallions with a book size of 125 or more in 2017 when compared to 2016 as reported at this time last year; a 13.0% decrease in mares bred to stallions with a book size between 100 and 124; a 27.4% decrease in mares bred to stallions with a book size between 75 and 99; a 11.5% decrease in mares bred to stallions with a book size between 50 and 74; a 14.9% increase in mares bred to stallions with a book size between 25 and 49; and a 4.7% decrease in mares bred to stallions with a book size fewer than 25.

When comparing statistics based on reports received through the same day (October 17) from previous breeding seasons, the percentage of broodmares covered by large book size (125 or more) stallions increased from 19.3% in 2013 to approximately 29% in 2015 where it has remained over the past three seasons.

The proportion of stallions with book sizes of 125 or more mares grew from 2.6% in 2013 to 4.5% in 2015. It has remained constant at that rate over the past three breeding seasons.

2013

2014

2015

2016

2017

% stallions with book size >125

2.6%

3.1%

4.5%

4.5%

4.5%

% mares covered by stallions with book size >125

19.3%

20.5%

29.1%

28.7%

29.4%

Note: Statistics summarized as of October 17 of the breeding seasons indicated in the columns above; as reports of mares bred continue to be received, final statistics are subject to change.

RMB statistics for all reported stallions in 2017 are available through the Fact Book section of The Jockey Club’s website at jockeyclub.com.

The stallion Into Mischief led all stallions with 235 mares bred in 2017. Rounding out the top five by number of RMBs were Dialed In, 231; American Pharoah, 214; Uncle Mo, 204; and, Bodemeister, 192.

Kentucky traditionally leads North America in Thoroughbred breeding activity. During 2017, Kentucky’s 229 reported stallions covered 17,275 mares, or 54.2% of all of the mares reported bred in North America. The number of mares bred to Kentucky stallions decreased 2.7% percent compared with the 17,750 reported at this time last year.

Of the top 10 states and provinces by number of mares reported bred in 2017, Ontario, Pennsylvania and Indiana stallions covered more mares in 2017 than in 2016, as reported at this time last year. The following table shows the top 10 states and provinces ranked by number of mares reported bred in 2017:

State/Province

2016 Stallions

2017 Stallions

Pct. Change

2016 Mares Bred

2017 Mares Bred

Pct. Change

Kentucky

227

229

.88%

17,750

17,275

-2.68%

California

156

137

-12.18%

2,543

2,356

-7.35%

Florida

107

92

-14.02%

2,757

2,073

-24.81%

New York

55

58

5.45%

1,510

1,326

-12.19%

Louisiana

102

93

-8.82%

1,332

1,235

-7.28%

Ontario

38

38

0.00%

761

810

6.44%

Maryland

32

30

-6.25%

913

768

-15.88%

New Mexico

72

58

-19.44%

692

605

-12.57%

Pennsylvania

41

36

-12.20%

489

563

15.13%

Indiana

48

59

22.92%

386

554

43.52%

Note: Each incident in which a mare was bred to more than one stallion and appeared on multiple RMBs is counted separately. As such, mares bred totals listed in the table above may differ slightly from counts of distinct mares bred.

In addition, Report of Mares Bred information on stallions that bred mares in North America is available through report 36P or a subscription service at equineline.com/ReportOfMaresBred.

The Jockey Club, founded in 1894 and dedicated to the improvement of Thoroughbred breeding and racing, is the breed registry for North American Thoroughbreds. In fulfillment of its mission, The Jockey Club, directly or through subsidiaries, provides support and leadership on a wide range of important industry initiatives, and it serves the information and technology needs of owners, breeders, media, fans and farms. It is the sole funding source for America’s Best Racing, the broad-based fan development initiative for Thoroughbred racing. You can follow America’s Best Racing at americasbestracing.net. Additional information is available at jockeyclub.com.

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The Jockey Club reminds stallion managers to submit their Reports of Mares Bred (RMBs) for the 2017 breeding season by Aug. 1.

“We want the breeding statistics we release in the fall to be as accurate as possible, so we request that RMBs be submitted by August 1,” said Matt Iuliano, executive vice president and executive director of The Jockey Club.

In addition, stallion managers who submit their RMBs by August 1 are among the first to receive their stallion service certificates, which facilitates the timely registration of 2018 foals.

Reports of Mares Bred may be submitted via Interactive Registration at registry.jockeyclub.com or a form is available by email, fax, or mail by contacting inquiries@jockeyclub.com.